The spin degree of freedom of an electron or a nucleus is one of the most basic properties of
nature and functions as an excellent qubit, as it provides a natural two-level system that is …

Quantum information protected by the topology of the storage medium is expected to exhibit
long coherence times. Another feature is topologically protected gates generated through …

Circuit QED techniques have been instrumental in manipulating and probing with exquisite
sensitivity the quantum state of superconducting quantum bits coupled to microwave …

We study a quantum heat engine at strong coupling between the system and the thermal
reservoirs. Exploiting a collective coordinate mapping, we incorporate system-reservoir …

Quantum technology promises revolutionizing applications in information processing,
communications, sensing and modelling. However, efficient on-demand cooling of the …

We present the Born-Markov approximated Redfield quantum master equation (RQME)
description for an open system of noninteracting particles (bosons or fermions) on an …

We demonstrate a microwave power-to-electrical energy conversion in a resonator-coupled
double quantum dot. The system, operated as a photodiode, converts individual microwave …

The coherent generation of light, from masers to lasers, relies upon the specific structure of
the individual emitters that lead to gain. Devices operating as lasers in the few-emitter limit …

Converting incoming photons to electrical current is the key operation principle of optical
photodetectors and it enables a host of emerging quantum information technologies. The …

Electroluminescence, the emission of light in the presence of an electric current, provides
information on the allowed electronic transitions of a given system. It is commonly used to …